What is a readily available source of dietary fiber?

Dietary fiber is a crucial component of a healthy diet, and it is predominantly found in plant-based foods. Among the options provided, vegetables are an excellent source of dietary fiber. They contain various types of fiber, such as soluble and insoluble fiber, which aid in digestive health, help maintain blood sugar levels, and improve satiety.

While grains also offer a significant amount of dietary fiber and could be considered a correct answer depending on the context, vegetables provide a wide range of additional vitamins, minerals, and antioxidants that contribute to overall health. This makes them a standout source of dietary fiber that is readily available in many diets.

Meat and dairy products are not sources of dietary fiber, as fiber is found in plant materials. Therefore, vegetables are the most appropriate and relevant answer in the context of dietary fiber sources.